Improvement in propellers for land conveyance



6 8 1 5, 2 v. O N d e t n a P N. wh KWS C m I1 DS R 5. 9 9 .6. 00 nm N l I l gsi Inventor,

A my @D lWitnesses:

AM.PI'IBTD-LIFHDA C0. ILV. (OSBURNE'S PROCESS.)

Y end of which is UNITED STATES PERRY DicKsoN, oE

PATENT OFFICE.

UTICA, MINNESOTA.

IMPROVEMENT IN PROPELLERS FOR lLAND CONVEYANCE.

Specification forming part of Letters Patent No. 36,995,

dated November 25, 1862.

making a part of this speci Figure l i pacity as regards speed of driving power obtained.

To enable those skilled in the art to fully understand and construct inyinvention, I will dproceed to describe it.

A represents a rectangular frame, the front supported by a pair of short 1 runners, B, connected to the frame A by a king-bolt or pivot, a, to admit of said sled being turned to guide the sled either to the right or left. ese runners may be turned by a steering device, A. back part of the frame A is supported f runners, C C, or those are allowed a vertical oscillating play oua cross-bar, b, attached to frame A, the central to said frame.

On the frame A, and at a point over the back runners, C C, there is placed a small frame, D, in the upper part of which a crosshead, E, is secured by pivots f, the cross-head being allowed to work or oscillate freely on its pivots, and to the cross-head a pendent rod, F, is at to move or work f a rack, M, into whi tached on which aslide, G, is fitted and allowed freely up and down.

lower end of this rod F the piston-rod H of a horizontal engine is attached, and to the slide G one end of a rod, I, is attached, the

piu, g, that passes horizontally through two short bars, h h, secured lo frame A.V

To each en tached an arm end of d of the rock-barJ there is at- K K. The arm K, at the rock-bar,

spurs z' on their under surfaces.

The slide G is attached to the lower end of ch a pinion, N, gears, said pinion being on a shaft, j, which is in the upper part of the cr0ss-head E and has a wheel,

at one end of it to which a handle, k, is attached.

pinion N, O, and in and secured a pin, Z, passing through a bar, m, on the frame D, and into or between the cogs of wheel O. (See Fig. 2.)

The rock-bar J is oscillated by the pistonrod H of the engine through the medium of the cross-head de G, and rod I, and the arms K K are thereby thrown alternately outward or backward and drawn inward b the rock-bar, the sled being propelled along by the outward or backward movement of the By adjusting the slide G higher or lower on its rod F it will be seen that the stroke or length of the oscillations of the rockbar J may be regulated as desired, the stroke vated on the rod There is another feature attending this adjustment of the slide G which is important when the invention is applied to a locomotive, and that is the propeller can be rendered noperative without stopping the engine or retarding its speed by simply raising the slide to a point in line with the pivots f or center of oscillation of the draW-headE, and the engine may then Water for supplying the tank which feeds the boiler. The speed of the locomotive can also by this adjustment of the slide be retarded or increased at the will of the engineer with the greatest facility.

I am aware that propellers for land conbe applied to the pumping of veyanees have been used with shoving-arms, l

and do not claim, broadly, such device; but

I do claim as new and desire to secure by Letters Patent- The appl 1ing of the power of the engine to the rod ll of the rock-bar J through the inedium of the slide G, pendent rod F, and crosshead E, the slide being adj usted on the rod F, and all arranged substantially as and for the purpose herein set forth.

PERB-Y DlCKSON.

YVitnesses:

ALBERT S. CUTLER, GiDEoN PETERMAN. 

